my.normdata.gen:
Multipal normal data set with three clusters generation
Description
To generate multipal normal data set with three clusters
Usage
my.normdata.gen(u, p, nobs, nvar)
Arguments
u
The parameters to contral the overlap degree among clusters. The cluster centers are (-u,u),(u,u),(u,-u) respectively. The larger u, the clusters more separated
p
Total number of variables
nobs
Number of observations
nvar
Number of informative variables, nvar takes even value;
Value
x
Multiple normal dataset generated
y
The true cluster assignment for the generated x dataset
Details
To generate a multiple normal dataset with three clusters, the first nvar varialbes are informative, and the remaining p-nvar are non-informative variables.
The three clusters are separated when u is large, and overlapped when u is small.